Please explain: Il a fait exprès de ne pas rendre la monnaie.

Because the verb is an infinitive.

Bonsoir Matt, The link below is for the lesson that covers negation of the infinitif. Using negations with infinitive verbs in French indirect speech (French Negations)%252Fsearch%253Fs%253Dne%252Bpas%252B%25252B%252Binfinitive A simple explanation is: in a phrase where there is an infinitif, ne. . pas goes before the infinitif and does not «surround» it if you will. For example: J'ai pris la décision de ne pas faire un désordre. --> I made the decision to not make a mess. As can be seen, ne pas goes before the infinitif «faire». However, Je n'ai pas pris la décision de faire un déorder. --> I did not make the decision to make a mess. This is the usual negation form. As can be seen in comparing the two phrases, the first is to not make a mess while the other indicated that the speaker did not make the decision. J'espère que cela vous aidera bien. à bientôt Ron

Good to know, thanks. Just to let you know, I ran into this question in Section A2 and the page that explains it is tagged B2. So maybe that's why I never saw it? I usually read all the lessons.